Horizon Fitness hobbyzone Apprentice S2 User manual

Instruction Manual | Bedienungsanleitung
Manuel d’utilisation | Manuale di Istruzioni
HBZ31000, HBZ31500
Apprentice®S 2 1.2m

®
2
As of this printing, you are required to register with the FAA if you own this product.
For up-to-date information on how to register with the FAA, please visit https://registermyuas.faa.gov/.
For additional assistance on regulations and guidance on UAS usage, visit knowbeforeyoufly.org/.
Safety Precautions and Warnings
As the user of this product, you are solely responsible for operating in a
manner that does not endanger yourself and others or result in damage to the
product or the property of others.
• Always keep a safe distance in all directions around your model to avoid
collisions or injury. This model is controlled by a radio signal subject to
interference from many sources outside your control. Interference can
cause momentary loss of control.
• Always operate your model in open spaces away from full-size vehicles,
traffic and people.
• Always carefully follow the directions and warnings for this and any
optional support equipment (chargers, rechargeable battery packs, etc.).
• Always keep all chemicals, small parts and anything electrical out of the
reach of children.
• Always avoid water exposure to all equipment not specifically designed and
protected for this purpose. Moisture causes damage to electronics.
• Never place any portion of the model in your mouth as it could cause
serious injury or even death.
• Never operate your model with low transmitter batteries.
• Always keep aircraft in sight and under control.
• Always use fully charged batteries.
• Always keep transmitter powered on while aircraft is powered.
• Always remove batteries before disassembly.
• Always keep moving parts clean.
• Always keep parts dry.
• Always let parts cool after use before touching.
• Always remove batteries after use.
• Always ensure failsafe is properly set before flying.
• Never operate aircraft with damaged wiring.
• Never touch moving parts.
NOTICE
All instructions, warranties and other collateral documents are subject to change at the sole discretion of Horizon Hobby, LLC. For up-to-date product literature,
visit www.horizonhobby.com or www.towerhobbies.com and click on the support or resources tab for this product.
Meaning of Special Language:
The following terms are used throughout the product literature to indicate various levels of potential harm when operating this product:
WARNING: Procedures, which if not properly followed, create the probability of property damage, collateral damage, and serious injury OR create a high
probability of superficial injury.
CAUTION: Procedures, which if not properly followed, create the probability of physical property damage AND a possibility of serious injury.
NOTICE: Procedures, which if not properly followed, create a possibility of physical property damage AND little or no possibility of injury.
WARNING: Read the ENTIRE instruction manual to become familiar with the features of the product before operating. Failure to operate the product
correctly can result in damage to the product, personal property and cause serious injury.
This is a sophisticated hobby product. It must be operated with caution and common sense and requires some basic mechanical ability. Failure to operate this
Product in a safe and responsible manner could result in injury or damage to the product or other property. This product is not intended for use by children
without direct adult supervision. Do not use with incompatible components or alter this product in any way outside of the instructions provided by Horizon
Hobby, LLC. This manual contains instructions for safety, operation and maintenance. It is essential to read and follow all the instructions and warnings in the
manual, prior to assembly, setup or use, in order to operate correctly and avoid damage or serious injury.
WARNING AGAINST COUNTERFEIT PRODUCTS: If you ever need to replace your Spektrum receiver found in a Horizon Hobby product, always purchase
from Horizon Hobby, LLC or a Horizon Hobby authorized dealer to ensure authentic high-quality Spektrum product. Horizon Hobby, LLC disclaims all
support and warranty with regards, but not limited to, compatibility and performance of counterfeit products or products claiming compatibility with DSM or
Spektrum technology.
AGE RECOMMENDATION: Not for children under 14 years. This is not a toy.

Apprentice®S 2 1.2m
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3
Specifications
RTF
Table of Contents
Motor: 2832-1300Kv 14-pole (SPMXAM1900) Installed Installed
ESC: 30-Amp Telemetry Capable ESC
(EFLA1030FB) Installed Installed
Servos: Ailerons (SPMSA381), Elevator and
Rudder/nose wheel (SPMSA382) Installed Installed
Receiver: AR631 6CH AS3X/SAFE Receiver
(SPMAR631) Installed Installed
Battery: 1300mAh 3S 11.1V Smart 30C LiPo;IC3
(SPMX13003S30M)Included Required to
Complete
Battery Charger: Smart S120 USB-C Charger,
1x20W (SPMXC1020) Included Required to
Complete
Transmitter: Spektrum™DXS Transmitter Included Required to
Complete
34.2 in (869mm
48.0 in (1220mm)
Box Contents
26.1oz (740g) with recommended battery
22.4oz (639g) without battery
341.80 sq in
(22.05 sq dm)
Specifications................................................................................................. 3
Charging Warnings.......................................................................................... 4
Charge the Flight Battery................................................................................ 4
Installing the Transmitter Batteries (RTF)......................................................... 5
Turning the Transmitter ON and OFF................................................................ 5
Transmitter Layout.......................................................................................... 5
Sensor Assisted Flight Envelope (SAFE) Technology......................................... 6
Hi/Low Rate Switch (Dual Rates)..................................................................... 7
Binding........................................................................................................... 8
Assembly ....................................................................................................... 8
Control Horn and Servo Arm Settings.............................................................. 9
Control Surface Centering And Clevis Installation On A Control Horn.............. 10
Installing the Flight Battery and Arming Electronic Speed Control (ESC)......... 10
LVC (Low Voltage Cutoff) ............................................................................... 11
Center of Gravity (CG) Verification ................................................................. 11
Control Direction Test ................................................................................... 12
Flight Control................................................................................................ 13
Trimming the Aircraft .................................................................................... 14
Choose a Flying Field.................................................................................... 14
Range Test ................................................................................................... 15
Preflight Checklist......................................................................................... 15
Flying Tips .................................................................................................... 15
Takeoff ......................................................................................................... 16
Flying ........................................................................................................... 17
Landing ........................................................................................................ 17
Post Flight..................................................................................................... 18
Service and Repairs...................................................................................... 18
Service of Power Components ...................................................................... 19
Optional Floats (Water Takeoff and Landings)................................................ 19
Optional Transmitter Setup............................................................................ 20
Trouble Shooting Guide for SAFE Technology................................................. 20
Trouble Shooting Guide................................................................................. 21
AMA National Model Aircraft Safety Code...................................................... 22
Limited Warranty .......................................................................................... 22
Contact Information ...................................................................................... 23
FCC Information............................................................................................ 23
IC Information............................................................................................... 23
Compliance Information for the European Union............................................ 24
Replacement Parts........................................................................................ 91
Recommended Parts..................................................................................... 91
Optional Parts............................................................................................... 91

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Charging Warnings
CAUTION: All instructions and warnings must be followed exactly.
Mishandling of Li-Po batteries can result in a fire, personal injury, and/
or property damage.
• NEVER LEAVE CHARGING BATTERIES UNATTENDED.
• NEVER CHARGE BATTERIES OVERNIGHT.
• By handling, charging or using the included Li-Po battery, you assume all
risks associated with lithium batteries.
• If at any time the battery begins to balloon or swell, discontinue use
immediately. If charging or discharging, discontinue and disconnect.
Continuing to use, charge or discharge a battery that is ballooning or
swelling can result in fire.
• Always store the battery at room temperature in a dry area for best results.
• Always transport or temporarily store the battery in a temperature range
of 40–120º F (5–49º C). Do not store battery or aircraft in a car or direct
sunlight. If stored in a hot car, the battery can be damaged or even catch fire.
• Always charge batteries away from flammable materials.
• Always inspect the battery before charging and never charge dead or
damaged batteries.
• Always disconnect the battery after charging, and let the charger cool
between charges.
• Always constantly monitor the temperature of the battery pack while charging.
• ONLY USE A CHARGER SPECIFICALLY DESIGNED TO CHARGE LI-PO
BATTERIES. Failure to charge the battery with a compatible charger may
cause fire resulting in personal injury and/or property damage.
• Never discharge Li-Po cells to below 3V under load.
• Never cover warning labels with hook and loop strips.
• Never charge batteries outside recommended levels.
• Never attempt to dismantle or alter the charger.
• Never allow minors under the age of 14 to charge battery packs.
• Never charge batteries in extremely hot or cold places (recommended
between 40–120° F or 5–49° C) or place in direct sunlight.
A
B
A
B
A
B
Charge the Flight Battery
The recommended battery for the aircraft, included with the RTF version, is an
11.1V, 1300mAh 3S 30C Smart Technology LiPo battery with an IC3®connector
(SPMX22003S30). If using a different battery, the battery should be of similar
capacity, dimensions and weight to fit in the fuselage. The aircraft electronic
speed control is equipped with an IC3 device connector. Ensure the battery
chosen is compatible. Always ensure the model balances at the recommended
center of gravity (CG) with the chosen battery. Follow your chosen battery and
battery charger instructions to charge the flight battery.
RTF Smart Technology Battery and S120 Charger,
Specifications and Operation
The Spektrum S120 Smart Technology battery charger included with the RTF
version of the aircraft is compatible only with Spektrum Smart 2-3 cell LiPo
batteries or 6-7 cell NiMH batteries. It is not compaptible with any other battery
chemistries or non-Smart batteries.
A USB power supply is required for use. A USB-C QC type power supply is
recommended for the fastest charge times.
To charge the included flight battery:
1. Using the supplied Type-C USB cable, connect the S120 charger to a USB
power supply (not included ).
2. Insert the Spektrum Smart
Battery IC3 connector
(A) into the charger
IC3 port, and insert the
battery balance lead (B)
into the charger balance
port. Both the IC3 and
balance connectors must
be connected for the
charging process to begin.
The battery may be disconnected from the charger at any time
to stop the charging process.
3. Disconnect the IC3 and balance connectors when the charge and balance
cycles are complete, as indicated by the LED.
4. The LED indicator will glow solid red to indicate a charging error. Follow
the operation steps to ensure proper connection is used to charge the
battery.
Refer to the LED indicator table for charger status.
IMPORTANT: Connecting a non-Smart battery will cause a charge error and the
S120 will not recognize or charge the battery.
S120 Specifications
Input USB Type C, power supply not included
Input Voltage 5V-12V
Charge Power 18W max (dependant on power supply)
Compatible USB Power Adaptor 5V/1A, 5V/2A, USB Quick Charge (QC) 2.0/3.0
Battery Connector IC3®and balance connector
Battery Types LiPo, NiMH (Spektrum Smart Batteries only )
Cell Count 2-3 cell LiPo, 6-7 cell NiMH
Max Output Voltage 13.05V
Max Output Current Up to 2A
LED Indicator
Power On USB 5V: White LED
USB Quick Charge 2.0/3.0: Blue LED
LiPo: Purple LED
NiMH: Yellow LED
Battery Capacity
Less Than 25% Single Flash
25% – 75% Double Flash
76% – 99% Triple Flash
Charge Complete Green LED (Solid)
Error Red LED (Solid)
USB-C port LED Indicator
Balance Port
IC3 Charge Port

Apprentice®S 2 1.2m
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Transmitter Layout
Explanation of DXS Transmitter LEDs, Switches and Modes for the Apprentice.
Trainer/Bind/Panic Button : This button is used as both the trainer and
bind button as well as the Panic button for your Apprentice S 2. For complete
binding instructions, refer to the binding section below. When using the trainer
function, connect the trainer cord (SPM6805) into the trainer port in both
the instructor and the student transmitters. The instructor transmitter must
be powered ON and bound to the receiver. The student transmitter must be
powered OFF. Any time you press and hold the trainer button on the instructor,
it will give control authority to the student. Releasing the trainer button returns
control to the instructor.
IMPORTANT: The student transmitter must always have the same settings
as the instructor. See Flight Training section for setup of other Spektrum
transmitters.
Hi/Lo Rate Switch: This switch supports high and low rate functions on
aileron, elevator and rudder channels. In the upper, or “HI” position, servo
travel is 100% on these channels. In the lower, or “LO,” position, servo travel
decreases to 70%. This switch lets you quickly change control rates from
high for aggressive maneuvers to low for smooth, precise maneuvers. When
learning to fly, use low rate.
Safe Mode Switch : This switch is used to select the SAFE Flight mode. For
other conventional receivers, this switch controls a servo connected to the
Channel 5/Gear port.
Throttle Cut Switch : This switch is used to arm and disarm the throttle control.
LEDs : Flashing with beeps Bind mode when Trainer (Bind) switch is held and
the transmitter is powered on (see Binding instructions). Pulsates with one low
tone beep every 2 seconds (when transmitter battery voltage drops below 4.7
volts). Replace the batteries immediately. If this happens while flying, land your
aircraft as soon and as safely as possible.
A B
D
E
C
WARNING: Before proceeding further, remove the propeller and spinner from the motor shaft. Never attempt
to program the radio components, assemble the aircraft or perform maintenance of any kind without
removing the propeller. Serious injury could result if the motor starts inadvertently with the propeller still attached.
1. Ensure the flight battery is NOT connected to the aircraft.
2. Remove the screw (A) and spinner (B) from the spinner
backplate (C).
3. Remove the hex nut (D), propeller (E), and the spinner
backplate from the collet.
Installing the Transmitter Batteries (RTF)
CAUTION: NEVER remove the transmitter batteries while the model is
powered on. Loss of model control, damage or injury may occur.
CAUTION: If using rechargeable batteries, charge only rechargeable
batteries. Charging non-rechargeable batteries may cause the
batteries to burst, resulting in injury to persons and/or damage to property.
CAUTION: Risk of explosion if battery is replaced by an incorrect type.
Dispose of used batteries according to national regulations.
1. Remove the battery cover from the bottom of the transmitter.
2. Install four AA batteries as shown.
3. Install the battery cover.
Turning the Transmitter ON and OFF
Press and hold the power button to power the transmitter ON. The RGB LED
indicator will illuminate Orange when the transmitter is ON and transmitting. To
power the transmitter OFF, press and hold the power button for 5 seconds.
Elevator/
Aileron
Throttle/
Rudder
Throttle Trim
SAFE Mode
Switch
Power Switch
Aileron Trim
Elevator Trim
Rudder Trim
Hi / Low Rate
Switch
Bind/Panic
Recovery Button Throttle Cut
Switch

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6
You control the help SAFE®technology provides while you learn to fly. As
your flying skills grow, decrease SAFE technology assistance. Change aircraft
response at any time by moving the Channel 5 (SAFE Flight mode) switch on
your transmitter.
IMPORTANT: These instructions are for the included DXS transmitter
(or similar transmitters) with a 3-position switch for Channel 5. If you fly this
aircraft with a Spektrum transmitter other than the included DXS, refer to
Optional Transmitter Setup and Receiver Setup.
012
Front
In= ON
Out = OFF
Back
Channel 5 Switch
(SAFE Flight Mode)
Trainer/ Panic Button
SAFE Flight Modes Channel 5 Switch Position
Beginner Mode Position 0
Intermediate Mode Position 1
Experienced Mode Position 2
Panic Recovery Mode
If you get into distress while flying in any mode, press and hold the
Panic / Trainer button and move the control sticks to their neutral position. The
SAFE technology will return the aircraft to a stable attitude, if the aircraft is at a
sufficient height with no obstacles in its path. Release the Panic Button to turn
off Panic mode and return the current SAFE flight mode. If you get into trouble
and need to go back to Beginner mode for maximum stability, remember to
fully move back the Channel 5 switch.
SAFE Technology makes this aircraft a better learning
tool, but you must set yourself up for success in flying:
• SAFE technology is designed as flight assistance, not an autopilot. The
pilot is always in control and required to fly the aircraft at all times
• Follow the instructions provided in this manual to maintain your aircraft in
top flying condition
• Seek qualified model flying instruction through your local model flying
club. A qualified flight instructor can propel your advancement in this
hobby
• Wind and environment can affect SAFE technology flight performance
• Ensure you have no distractions so you benefit from every moment of
flight time
• You must still fly the aircraft away from obstacles and at an altitude that
will allow for a safe recovery
Activating SAFE Technology
SAFE technology is not active until you advance the throttle past 25%. Once the
SAFE technology is active, the control surfaces may move on the aircraft.This
is normal. The SAFE technology will remain active until the ESC is turned off.
Understanding Oscillation
In some flight conditions, you may see oscillation. If oscillation occurs,
decrease the airspeed. If oscillation still persists, refer to the Troubleshooting
Guide for more information.
CAUTION: Flying in level forward flight and calm wind conditions at
full throttle in any mode or long high-speed dives may result in strong
oscillation that can damage the aircraft.
If there is oscillation in any mode, decrease throttle immediately. If oscillation
persists, refer to the Troubleshooting Guide.
CAUTION: Beginner, Intermediate, and Panic modes are intended for
the training environment. Flying continuous high-G maneuvers (such
as loops) in Experienced mode for an extended period of time may lead to
inconsistent flight envelope and Panic mode behavior. If this occurs, land in
Experienced mode and power cycle the receiver before flying again.
Launch and Landing Assistance
Take off and landings can be better managed by using the Beginner mode. If
the model is launched incorrectly, or is landing at a less than perfect attitude,
pull and hold the Panic Switch. The model can correct and help to prevent a
crash.
See the Take Off and Landing sections in this manual.
IMPORTANT: A level runway is required for takeoffs in Beginner mode due
to throttle climb assistance.
SAFE Take OffSAFE Landing
Failsafe
In the unlikely loss of radio connection, failsafe will place the aircraft in a
descending circle to the ground, unless the radio connection is restored.
Sensor Assisted Flight Envelope (SAFE) Technology

Apprentice®S 2 1.2m
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SAFE technology is a revolutionary flight training system designed to give you
a stable platform for safely developing your flying skills. This is not an autopilot
or self-guiding robot. The sensors and software in this system help you fly the
aircraft where you want to go while decreasing the risk of an out-of-control
crash. You can progress through the Beginner, Intermediate and Experienced
flight modes as your skills increase, all with the confidence of an optional Panic
recovery mode. At any time during a flight you can switch between the 3 flight
modes or use Panic recovery to get your aircraft to a safe flying attitude.
SAFE Flight Modes
Beginner Mode
RollPitch
• Envelope limit: Pitch (nose up and down) and Roll (wing tips up and down)
angles are limited to help you keep the aircraft airborne
• Self-leveling: when the pitch and roll controls are returned to neutral, the
aircraft returns to level flight
• Stability assisted takeoff and landing
• Throttle based climb and descent
Intermediate Mode
RollPitch
• Natural Flight Experience: Pitch and roll controls are increased. Self leveling
is not active.
• Large Flight Envelope: The pilot is only prevented from entering extreme
flight attitudes.
Experienced Mode
RollPitch
• Natural Flight Experience: The pilot experiences natural AS3X flight for
smooth handling and outstanding precision
• Unlimited Flight Envelope: No limit on Pitch and Roll angles (airframe
limited)
Panic Recovery
• Immediate recovery to a safe flying attitude
• Return all transmitter controls to neutral for the quickest recovery
• This mode is intended to provide the pilot with the confidence to continue
to improve their flight skills
Pilot loses control of the aircraft in any
flight mode.
1
2
3
Pilot presses and holds the Panic
Recovery button and returns all other
controls to their neutral position. The
aircraft will roll wings level and pull
out of a dive...
...once the aircraft is flying straight
and level, the pilot releases the Panic
Recovery button and continues a
gentle climb to a safe altitude.
IMPORTANT: Aircraft will recover to a safer attitude even if sticks are held.
Some control input is still used with panic activated.
AS3X®technology
Horizon Hobby has always made RC sport, scale and unique aircraft with the
kind of performance experts appreciate. Now the exclusive Artificial Stability 3
aXis (AS3X) system helps take performance expectations in aircraft a quantum
leap higher. Based on the successful use of MEMS sensor technology within
the AS3X Stabilization System essential to Blade®ultra micro flybarless
helicopters, the specifically tuned AS3X System for airplanes helps invisibly
correct for turbulence, torque and tip stalls when encountered. Furthermore,
the outstanding control agility delivers an ultra smooth, locked-in feel that
obeys your every command with performance that’s natural feeling. It’s so
gratifying, in fact, that it’s as though you’re the RC pilot of an expertly tuned,
giant-scale aircraft. AS3X will change the way you’ll want to fly now and in the
future. To see what we mean, go to www.E-fliteRC.com/AS3X.
The included DSMX full range transmitter features a dual rates switch which
lets you change between high and low control rates for the aileron, elevator
and rudder.
When powered ON, this transmitter is automatically set to high-rate mode.
Hi/Low Rate Switch (Dual Rates)
High-rate mode
In high-rate mode, the controls can reach their maximum values. This mode
is typically preferred by experienced pilots for maximum control authority.
Low-rate mode
In low-rate mode, the controls are reduced to approximately 70% of their
maximum values. This mode is typically preferred by (and best for) beginner
pilots or others interested in smoother and more easily controlled flight.

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Tail Installation
1. Install the horizontal tail (A) on the fuselage under the linkages as shown.
2. Carefully insert the 2 pins (B) of the vertical fin (C) through the horizontal
tail holes into the fuselage holes.
3. Under the fuselage, install the 2 screws (D) into the fuselage and the
vertical fin pins. Tighten the screws, but do not break the plastic.
4. Connect the respective clevises in the outermost holes in the rudder and
elevator control horns. Refer to the clevis adjustment instructions to center
the rudder and elevators.
Disassemble in reverse order.
Assembly
For video assistance regarding assembly, visit the
Apprentice product page at www.horizonhobby.com
Landing Gear Installation
1. Install the main landing gear assembly (A) into the slot on the bottom of the
fuselage.
2. Place the 2 landing gear brackets (B) into location as shown, noting the
Right and Left indicators.
3. Secure the landing gear assembly into place using 4 screws (C).
4. Install the front straps (D) using the 4 screws (E) to ensure that they do not
become lost. The front straps are required to install the optional Float Set
and Mounting Wires (HBZ7390).
IMPORTANT: Do Not use the propeller that is included with the float set.
A
1
2
A
D
B
C
1
2
3
B
C
E
D
Binding
The receiver must be bound to your transmitter before it will operate. Binding
is the process of teaching the receiver the specific code of the transmitter so it
will only connect to that specific transmitter.
The included RTF transmitter is bound to the aircraft at the factory. If you need
to re-bind for any reason, follow the binding procedure as shown.
An extension is installed in the flight controller bind port so binding may be
done through the battery door in the bottom of the aircraft without having to
remove the wing assembly. Simply insert the bind plug in the open end of the
extension marked “BIND” to enter bind mode.
1. Install a bind plug in the bind port extension.
2. Connect the flight battery to the ESC. The orange receiver LED starts to
flash continuously, indicating the receiver is in bind mode.
3. Power on the transmitter while holding the transmitter bind button or
switch. Refer to your transmitter’s manual for specific binding instructions.
4. The bind process is complete when the orange LED on the receiver is solid.
5. Remove the bind plug from the bind port extension.

Apprentice®S 2 1.2m
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Wing Installation
1. Connect the aileron servo connectors to the included Y-harness (A) in the
fuselage. The left and right servos can be connected to either side of the
Y-harness. Ensure the Y-harness is connected to port 2 of the receiver.
2. Install the wing on the fuselage.
CAUTION: DO NOT crush or otherwise damage the wiring when
attaching the wing to the fuselage.
3. Install 6 rubber bands (B) on the front and back rods to complete the
installation.
Disassemble in reverse order.
IMPORTANT: Correct operation of the SAFE system requires connection of
both ailerons to the included Y-harness and port 2 of the receiver.
OR
1
2
B
A
Control Horn and Servo Arm Settings
NOTICE: Moving a linkage to another position may block the servo arm or
affect SAFE technology functionality.
The Illustration shows the factory hole settings in servo arms and control horns.
Elevator Ailerons Rudder
ArmsHorns
Nose Gear
Rudder

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10
CAUTION: Always disconnect the Li-Po flight battery from the aircraft
receiver when not flying to avoid over-discharging the battery.
CAUTION: Always keep hands away from the propeller. When armed,
the motor will turn the propeller in response to any throttle movement.
1. Rest the aircraft on a flat surface with the landing gear facing up.
2. Turn the latch (A) and open the battery hatch.
3. Lower the throttle and throttle trim, then power on the transmitter for at
least 5 seconds.
4. Center and secure the flight battery (B) in the battery compartment using
the hook and loop straps (C) so that the aircraft has a balanced Center of
Gravity (CG).
IMPORTANT: Before flying, refer to the “Verifying Your Aircraft’s Center of
Gravity (CG)” section for details about final battery placement.
5. Connect the flight battery in the aircraft, then replace the battery hatch and
turn the latch.
6. Put the aircraft on its landing gear, on level ground and must be kept
immobile while the SAFE system initializes.
7. After the SAFE system initializes, the control surfaces will move back and
forth, then come to neutral to indicate the SAFE system has initialized and
is ready to operate.
IMPORTANT: All trimming and control test should be done before the throttle
is advanced, in Experienced Mode.
Installing the Flight Battery and Arming Electronic Speed Control (ESC)
Control Surface Centering And Clevis Installation On A Control Horn
Always check to ensure your control surfaces (Rudder, Elevator and Ailerons)
are centered with the rest of the surface before every flight.. If the control
surfaces are not centered, centering can be achieved by following the
steps below:
• Pull the tube from the clevis to the linkage.
• Carefully spread the clevis, then insert the clevis pin
into the correct hole in the control horn.
• Move the tube to hold the clevis on the control horn.
IMPORTANT: All trimming and control tests should be done before throttle is
advanced, in Experienced Mode.
Turn the clevis on the linkage to change the length of the linkage between the
servo arm and the control horn.
1.
2.
3.
4.
5.
6.
Keep immobile and out
of the wind for 5 seconds
A
B
C

Apprentice®S 2 1.2m
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11
LVC is a feature built into your ESC to protect the battery from over-discharge.
When the battery charge is too low, LVC limits power supplied to the motor. The
aircraft will begin to slow and you will hear the motor pulse. When the motor
power decreases, land the aircraft immediately and recharge the flight battery.
Disconnect and remove the Li-Po battery from the aircraft after use to prevent
trickle discharge. Charge your Li-Po battery to about half capacity before
storage. During storage, make sure the battery charge does not fall below 3V
per cell.
NOTICE: Repeated flying to LVC will damage the battery.
Battery Precautions for Flight
• Keep the aircraft close until you are familiar with the flight time.
• Do not fly to LVC (motor pulsing) repeatedly. This may result in battery damage.
• Always disconnect and remove the flight battery when finished flying.
TIP: Monitor your aircraft battery’s voltage before and after flying by using a
Li-Po Cell Voltage Checker (SPMXBC100, sold separately).
Center of Gravity (CG) Verification
An aircraft with a correct CG has its weight balanced at a calculated point for
safe and stable flight.
After installing the battery (in the recommended position) and before powering
on the ESC, verify the CG by supporting the aircraft 75.0mm (approximately 3
inches) back from the front edge of the wing, as shown.
TIP: Balance the aircraft on your fingertips near the fuselage under the
wings.
• If the nose goes down, move the flight battery back until the aircraft
balances.
• If the nose goes up, move the flight battery forward until the aircraft
balances.
When flying with correct CG in beginner mode, the aircraft should climb
gradually at full power and fly level at 50%–60% power with no elevator input.
If the aircraft CG is too far forward (nose heavy), up elevator is required to fly
level at 50%–60% power. If the aircraft CG is too far aft (tail heavy), down
elevator is required to fly level.
Adjust the battery position as needed.
75mm
3 inches back from the
leading edge of the wing.
LVC (Low Voltage Cutoff)

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12
IMPORTANT: All trimming and control test should be done before throttle is
advanced and in Experienced Mode.
Power on the transmitter. Make sure the throttle is at 0% and that throttle trim
is fully lowered on the transmitter. Power on the model. Make sure the control
surfaces (rudder, elevator and ailerons) are at neutral or 0 degrees. Ideally,
centering trim will center the surfaces. Refer to Control Centering instructions
to adjust control surfaces. Move the transmitter control sticks so the model’s
rudder, elevator and ailerons move as shown (illustrations show a view from
the rear of the aircraft). If your model does not respond correctly, DO NOT FLY!
See the Troubleshooting Guide in this manual for more information. If you need
more assistance, contact the appropriate Horizon product support department.
Control Direction Test
Transmitter Command Control Surface Response
ElevatorAileronsRudder

Apprentice®S 2 1.2m
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13
TIP: For the first flights, make sure Flight Mode switch is set to Beginner mode, the best flight mode to help you learn to fly.
For smooth control of your aircraft, always make small control moves. All directions are described as if you were sitting in the aircraft.
For example, when the aircraft’s nose is pointing toward you, left steering (rudder) will turn the aircraft left (your right while holding the transmitter).
• Flying faster or slower: When your aircraft is stable in the air, push the
throttle stick up to make the aircraft go faster, and pull the throttle stick
back to slow down. The aircraft will climb when the throttle is increased.
• Elevator up and down: Push the elevator stick forward to make the aircraft
go down and pull the elevator stick back to go up.
• Banking right and left: Move the aileron stick right to make the aircraft drop
the wing (bank) to the right and move the aileron stick left to bank left.
• Steering right and left: Move the rudder stick right to make the aircraft go
right and move the rudder stick left to go left.
Flight Control
Transmitter Command Aircraft Response
ThrottleElevatorAileronRudder

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14
Trimming the Aircraft
Manually Adjusting Trim
It is recommend that the SAFE flight mode switch is set to Experienced mode
(position 2) before manually adjusting trim.
Perform manual adjustment of trim before increasing the throttle above 25% or
the control surfaces will move when the aircraft is moved.
Return any trim setting on the transmitter to neutral by pushing the trim slider
to the middle position, then adjusting the clevis on that control surface to
position it the same as it was with the trim slider offset.
1. Remove the clevis from the control horn.
2. Turn the clevis (as shown) to lengthen or shorten the pushrod.
3. Close the clevis onto the control horn and slide the tube towards the horn to
secure the clevis.
Wind
600 feet
(183 m)
Fly in this area
(upwind of pilot)
Choose a Flying Field
In order to have the most success and to protect your property and aircraft, it is
very important to select a place to fly that is very open. Consult local laws and
ordinances before choosing a location to fly your aircraft.
The site should:
• Have a minimum of approximately 600 feet (183m) of clear space in all
directions.
• Stay clear of pedestrians.
• Stay free of trees, buildings, cars, power lines or anything that could
entangle your aircraft or interfere with your line of sight.
Remember, your aircraft can reach significant speeds when flying and can
cover ground quickly. Plan on flying in an area that gives you more space than
you think you need, especially with first flights.
Adjusting Trim in flight
If your aircraft does not fly straight and level at half throttle with the sticks at
center, fly into the wind and adjust the aircrafts trim by moving the digital trim
buttons.
IMPORTANT: All trimming and Control test should be performed when in
Experienced Mode.
Aircraft Drift Required Trim
ElevatorAileronRudder

Apprentice®S 2 1.2m
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Range Test
CAUTION: While holding the aircraft during the range test, always
keep body parts and loose items away from the propeller. Failure to
do so could cause personal injury.
Before each flying session, and especially with a new model, you should
perform a range check. The DXS incorporates a range testing system. Placing
the transmitter in RANGE CHECK mode reduces the output power, allowing a
range check.
1. Power on the transmitter for 5 seconds or more with the throttle stick and
trim low. Plug in the aircraft battery and keep the aircraft immobile for
5 seconds.
2. Press and hold switch A(Bind button) and toggle switch Ffour times within
10 seconds. The transmitter LEDs will flash orange and the alarm will
sound. The system is in range check mode. Do not let go of the bind button
until you are finished with the range check.
IMPORTANT: You must hold the BIND/Panic button during the entire range
check process. Releasing the button will exit the range check mode.
3. With the system powered on and the model restrained on the ground*,
stand 28 meters (90 feet) away from the model.
CAUTION: In some aircraft, when the model is placed on the ground,
the antenna(s) can be within inches of the ground. Close proximity of
the antenna(s) to the ground can reduce the effectiveness of the range
check. If you experience issues during the range check, restrain the model
on a non-conductive stand or table up to 2ft (60cm) above the ground, then
range check the system again.
4. Move the transmitter rudder, elevator, aileron and throttle controls to ensure
they operate smoothly at 28 meters (90 feet).
5. If control issues exist, do not attempt to fly. Refer to the contact table at the
end of the this manual to contact Horizon Hobby product support. Also, see
the Spektrum website for more information.
1
1. Find a safe and open area.
2. Charge flight battery.
3. Install fully charged flight battery in aircraft.
4. Make sure linkages move freely.
5. Perform Control Direction Test.
6. Perform a Range Check.
7. Plan flight for flying field conditions.
8. Set a flight timer for 6-8 Min.
9. Have fun!
• Start in beginner mode. As you learn and become more confident, change
modes to advance.
• Resist the desire to fly at full throttle. Flying slowly at first allows for greater
response time should anything go wrong.
• Always keep your aircraft in plain sight and up wind from you.
• Gain experience by first flying in large circles high off the ground. Once you
feel comfortable, gradually progress to more advanced maneuvers.
• Do not attempt your first turn at low altitude. Higher altitudes allow for
greater possibility of correction.
• Control stick movements are quite sensitive. Avoid pushing the control
sticks to their endpoints until you become more familiar with your aircraft.
• To recover from a nose dive, decrease throttle and release the aileron stick.
Pull the elevator stick back a small amount to pull up the nose of the aircraft.
• If you feel you have lost control press and hold the Panic Button.
Flying Tips
Preflight Checklist
2
3
Keep upright, immobile
and out of the wind for
5 seconds
X 4
100%
Switch F
100%
28 meters (90 feet)

®
16
For video assistance regarding assembly, visit the
Apprentice product page at www.horizonhobby.com
Flying Conditions
A good flying day is calm, with winds that are less than 5–7 mph (8–11km/h).
Flying in faster winds than this could make flying difficult and result in a crash.
Wind near the ground can be less than the wind at the elevation where your
aircraft flies.
Ground Launch
Take off from the ground in Beginner mode is recommended for first flights,
however, if the ground is not hard and level, get help to hand launch your
aircraft.
1. Place the aircraft on its landing gear in a large, open area with smooth
asphalt or concrete. The aircraft’s nose should point into the wind (in no
greater than 5–7 mph (8–11km/hr) wind).
2. Stand behind your aircraft so you can see the rudder, ailerons and elevator.
3. Slowly move the throttle stick to FULL (100%) while gently pulling back on
the elevator stick. Use the rudder to keep the aircraft’s nose pointed into
the wind while it leaves the ground.
4. With a full battery in calm wind, your aircraft should rise off the ground in
approximately 20 feet (7 meters).
TIP: Take off in Beginner mode, increase throttle and keep the aircraft
straight with the rudder control. The aircraft will rise from a level runway in
a short distance. Obtain a steady climb to a safe altitude. Use Panic Switch
if needed.
Takeoff
Wind
Wind
Hand Launch
When learning to fly, get help to hand-launch your aircraft so you can
concentrate on flying. If you must hand-launch the aircraft alone, hold
the model in your dominant hand and the transmitter in your other hand.
An optional neck strap (SPMP610, sold separately) can help you hold the
transmitter.
1. Grip the aircraft under the fuselage, behind the rear landing gear.
2. Carefully increase transmitter throttle control to FULL (100%).
3. Throw the aircraft slightly nose up and directly into the wind while keeping
the wings parallel to the ground.
TIP: Hand launch in Beginner mode. The technology will keep the aircraft
level and in a climb. Obtain a safe and steady climb to a safe altitude.

Apprentice®S 2 1.2m
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The aircraft can fly for approximately 6 or more minutes
on one battery charge.This flight time is based on the
recommended flying style shown in this manual.
If the motor begins to pulse, the battery is getting low and
you must land immediately.
1. Start your landing procedure by switching the filght
mode switch to Beginner Mode.
2. Decrease the throttle and bring the aircraft’s nose into
the wind. Do not be afraid to fully reduce the throttle
and let the aircraft glide unpowered.
3. While gliding into the wind, little or no elevator, aileron
and rudder should be required. If you think the aircraft will
land short of your target area, gently add a small amount
of throttle.
4. Once the aircraft is 1 meter (3–4 feet) above ground,
slowly pull back the elevator stick. At this speed, this
should result in a “flare”, causing the nose to rise
without increasing altitude. The aircraft will lose speed
so that the main gear lands first before the nose gear
touches down.
5. Allow the aircraft to come to a stop.
CAUTION: Never catch a flying aircraft in your
hands. Doing so could cause personal injury and
damage to the aircraft.
NOTICE: If a crash is imminent, reduce the throttle and
trim fully. Failure to do so could result in extra damage
to the airframe, as well as damage to the ESC and
motor.
NOTICE: Crash damage is not covered under warranty.
Landing
Wind
Wind
Pilot
Landing Pattern
1
1
2
2
3
3
4
4
Flying
Let the aircraft climb at full throttle, into the wind, until the aircraft gets about
200 feet (61meters) above the ground, then decrease the throttle to half (50%).
Try to make only small and gentle movements of the control sticks so you can
see how the aircraft responds. Your aircraft is designed to climb and turn well.
Flying with the nose pointed toward you is one of the hardest things to do
when learning to fly.
To practice piloting the aircraft with the nose pointed toward you, try flying in
large circles high off the ground.
50% throttle
Full throttle Reduced throttle

®
18
Post Flight
NOTICE: When you are finished flying, never keep the aircraft in the sun.
Do not store the aircraft in a hot, enclosed area such as a car. Doing so can
damage the foam.
Post Flight Checklist
1. Disconnect Flight Battery
2. Power off transmitter
3. Remove flight battery from aircraft
4. Recharge flight battery
5. Repair or replace all damaged parts
6. Store flight battery apart from aircraft and monitor the battery charge
7. Make note of flight conditions and flight plan results, planning for
future flights
Service and Repairs
NOTICE: After any impact or replacement, always ensure the receiver is secure
in the fuselage. If you replace the receiver, install the new receiver in the same
orientation and manner as the original receiver or damage may result.
Thanks to the EPO foam material in the wing and fuselage of this aircraft, repairs
to the foam can be made using virtually any adhesive (hot glue, regular CA
(cyanoacrylate adhesive), epoxy, etc). However, use only foam-compatible CA,
foam-compatible accelerant or epoxy on the vertical and horizontal tail material.
When parts are not repairable, see the replacement parts list for ordering by
item number. For a listing of all replacement and optional parts, refer to the list
at the back of this manual.

Apprentice®S 2 1.2m
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IMPORTANT: We recommend flying with floats only once you have become
able to fly comfortably in Experienced flight mode.
Only use the floats if you are comfortable flying your aircraft and have repeatedly
taken off, flown and landed with success. Flying off water poses a higher risk to
the airplane because the electronics can fail if fully immersed in water.
Optional floats and float mounting wires (HBZ7390) sold separately.
Always ensure the optional floats are secure on the fuselage before putting the
aircraft in water.
To take off on water, steer with the rudder and slowly increase the throttle.
Keep the wings level on takeoff. Hold a small amount (1/4–1/3) of up elevator
and the aircraft will lift off once flying speed is reached. Avoid rapidly
increasing the throttle as torque from the motor may cause the aircraft to roll
to the left when on water.
To land this aircraft on water, fly the aircraft to a couple of feet off the surface
of the water. Reduce throttle and add up elevator to flare the aircraft.
When taxiing, you must use throttle to move the aircraft forward, but steer with
the rudder stick. The stick will turn both the aircraft rudder and a small rudder
attached to the left float.
Avoid taxiing cross wind if there is a breeze, as this can cause the aircraft to
flip over if wind gets under the upwind wing. Taxi 45 degrees into the direction
of the wind (not perpendicular to the wind) and use aileron to hold the upwind
wing down. The aircraft will naturally try to face into the wind when taxiing.
Always fully dry the aircraft after landing on water.
CAUTION: Never go alone to get a downed model in the water.
CAUTION: If at any time water splashes in the fuselage while flying
from water, bring the airplane to shore, open the battery hatch and
immediately remove any water that may have gotten in the fuselage. Leave
the battery hatch open overnight to let the inside dry out and to prevent
moisture damage to the electronic components. Failure to do so could cause
the electronic components to fail, which could result in a crash.
Service of Power Components
CAUTION: Always disconnect the flight battery from the model before
removing the propeller.
Disassembly
1. Remove the screw (A) and spinner (B) from the spinner backplate (C).
2. Remove the hex nut (D), propeller (E), and the spinner backplate from the
collet (F). A tool will be required to remove the hex nut.
3. Carefully remove 3 screws (G) and the cowling (H) from the fuselage.
4. Remove the collet from the motor (I).
5. Remove 4 screws (J) from the motor mount (K) and the fuselage.
6. Disconnect the motor connectors from the ESC connectors.
7. Remove 4 screws (L) to remove the motor from the motor mount.
Assemble in reverse order.
Assembly Tips
• Correctly align and connect the motor wire colors with the ESC wires.
• The propeller size numbers (8.25 x 5.5) must face out from the motor for
correct propeller operation.
• Ensure the spinner is fully connected to the spinner backplate for safe
operation.
A
AB
F
EC
D
Optional Floats (Water Takeoff and Landings)
45º
Up Aileron
Down Aileron
Wind
Taxi 45 degrees into the direction of the wind.
G
H
I
J
K
L

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Optional Transmitter Setup
If using any DSMX transmitter other than the included DXS (3 pos gear switch)
the radio will have to be configured correctly for the SAFE system to work
properly.
• SAFE Flight mode is selected using Channel 5 signal (high, middle, low)
• Panic mode is selected with Channel 6 signal (high, low)
Refer to your transmitter’s manual for more information about transmitter
setup.
If using a 2 pos switch for Safe flight modes only Beginner and Experienced
modes will be active.
Computerized Transmitter Setup
Start all transmitter programming with a blank ACRO model
(perform a model reset), then name the model.
Set Dual Rates to HIGH 100%
LOW 70%
Set Servo Travel to 100%
DX6i 1. Go to the SETUP LIST MENU
2. Set MODEL TYPE: ACRO
DX7S
DX8
1. Go to the SYSTEM SETUP
2. Set MODEL TYPE: AIRPLANE
3. Set WING TYPE: NORMAL, TAIL: NORMAL
DX6e
DX6 (Gen2)
DX7 (Gen2)
DX8 (Gen2)
DX9
DX10t
DX18
DX20
iX12
iX20
NX6
NX8
NX10
1. Go to the SYSTEM SETUP
2. Set MODEL TYPE: AIRPLANE
3. Set AIRCRAFT WING: NORMAL, TAIL: NORMAL
Trouble Shooting Guide for SAFE Technology
Problem Possible Cause Solution
Oscillation
Flying over recommended airspeed Reduce air speed
Damaged propeller or spinner Replace propeller or spinner
Imbalanced propeller Balance the propeller. For more information, view John Redman’s propeller balancing video
at www.horizonhobby.com
Motor vibration Replace parts or correctly align all parts and tighten fasteners as needed
Loose receiver Total system failure. Align and secure receiver in fuselage
Loose aircraft controls Tighten or otherwise secure parts (servo, arm, linkage, horn and control surface)
Worn parts Adjust gain to compensate for parts wear or replace worn parts (especially propeller, pivot points or servo)
Irregular servo rotation Replace servo
Trim is at extreme and
aircraft does not fly
straight or level
Trim is not at neutral If you adjust trim more than 4 clicks, adjust the clevis to mechanically remove trim